Two-dimensional code
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United States of America Patent
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Feb 13, 2018
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app pub date -
Nov 7, 2013
filing date -
Nov 13, 2012
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Abstract
Disclosed is a two-dimensional code which is not likely to be affected by contamination or out-of-focus photographing thereof and can thus be accurately recognized in a short time even when it is photographed under various photographing conditions. The disclosed two-dimensional code comprises: cells representing binary-coded data that are arranged as a pattern in a two-dimensional matrix; and four or more different position detection patterns.
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